Systems and methods for reduced bandwidth data transmission between network connected devices

ABSTRACT

Systems and methods are disclosed for reducing bandwidth during the transmission of data between first and second devices over a network. One method includes: receiving a first data request from the first device; generating a first request identifier associated with the first data request; transmitting to the first device a response to the first data request and the first request identifier associated with the first data request; receiving, from the first device, a partial second data request, the partial second data request including the first request identifier associated with the first data request, and a differential between the first data request and the second data request; and constructing, at the second device, a full second data request, based on a comparison between the first data request, fetched using the first request identifier, and the received differential between the first data request and the second data request.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application is a continuation of U.S. Nonprovisional patentapplication Ser. No. 13/929,511, filed Jun. 27, 2013, the entirety ofwhich is incorporated herein by reference.

TECHNICAL FIELD

Various embodiments of the present disclosure relate generally to datatransmission between network connected devices. More specifically,exemplary embodiments of the present disclosure relate to systems andmethods for reducing bandwidth during the transmission of data, such asaccording to HTTP, between devices over the Internet.

BACKGROUND

People are increasingly accessing Internet content, applications, andweb-services over their mobile devices. Many experts have expressedtheir belief that mobile web traffic has now surpassed traditional,desktop-based traffic. The use of mobile applications now represents astaggering proportion of consumers' free time, and of online companies'revenue. Web developers, publishers, and e-commerce sites have gone togreat lengths to accommodate the tremendous increase in mobile webbrowsing. For example, developers and sites have propagatedmobile-specific versions of their sites, and mobile applications thatsimplify a user's interaction with content and services, in the contextof the smaller displays and input mechanisms associated with mobiledevices.

In the context of traditional HTTP communications over a network,especially in a bandwidth controlled network, the need to generate andtransmit multiple, similar, fully-constructed requests may causeinefficiencies. For example, if a server, computer, or mobile device isinteracting with another server, computer, or mobile device over anetwork, that device might make two or more requests to the opposingdevice. For example, a mobile phone might send a first request forcontent to a server and a second request for content to the server. Eventhough both requests are of the same structure, the mobile device musttraditionally generate and transmit both entire requests, even thoughonly a small input or parameter may be different between the first andsecond requests. In a bandwidth controlled network, and/or in arelatively lower bandwidth mobile network, the generation andtransmission of multiple similar HTTP requests may cause manydisadvantages, including slow response time, user dissatisfaction, andlower revenue associated with such activities.

Accordingly, a need exists for systems and methods for improved datatransmission between network connected devices. More specifically, aneed exists for systems and methods for reducing bandwidth during thetransmission of data, such as according to HTTP, between devices overthe Internet.

SUMMARY OF THE DISCLOSURE

According to certain embodiments, methods are disclosed for reducingbandwidth during the transmission of data between first and seconddevices over a network. One method includes receiving, from the firstdevice over the network, a first data request; generating, and storingat the second device, a first request identifier associated with thefirst data request; transmitting, to the first device over the network,a response to the first data request and the first request identifierassociated with the first data request; receiving, from the first deviceover the network, a partial second data request, the partial second datarequest including (i) the first request identifier associated with thefirst data request, and (ii) a differential between the first datarequest and the second data request; and constructing, at the seconddevice, a full second data request, based on a comparison between thefirst data request, fetched using the first request identifier, and thereceived differential between the first data request and the second datarequest.

Embodiments of the disclosure relate to one or more of: generating, atthe second device, a response to the full second data request; andtransmitting, to the first device over the network, a differentialbetween the response to the first data request and the response to thefull second data request; and to generating, at the second device, aresponse to the full second data request; and transmitting, to the firstdevice over the network, an identifier associated with the full seconddata request, and a differential between the response to the first datarequest and the response to the full second data request.

In certain embodiments, the first device constructs a full secondresponse, based on a comparison between the first data response, fetchedusing the first request identifier, and the received differentialbetween the first data response and the full second data response; orthe first device constructs a full second response, based on acomparison between the first data response, fetched using the firstrequest identifier, and the received differential between the first dataresponse and the full second data response.

In certain embodiments, the response to the first data request and thefirst request identifier associated with the first data request arestored at the first device; the first request identifier associated withthe first data request is stored within a cache of the second device;constructing, at the second device, the full second data request, isperformed by merging the received differential between the first datarequest and the second data request into the first data request;constructing, at the second device, the full second data request, isperformed by swapping a payload element in the first data request with apayload element in the received differential between the first datarequest and the second data request; the first device is a personalcomputer, tablet computer, or smartphone and the second device is aserver executing a Web-based Simple Object Access Protocol (“SOAP”)service, Extensible Markup Language (“XML”) service, or RepresentationalState Transfer (“REST”) service.

According to certain embodiments, systems are disclosed for reducingbandwidth during the transmission of data between first and seconddevices over a network. One system includes a data storage devicestoring instructions for reducing bandwidth during the transmission ofdata between first and second devices over a network; and a processorconfigured to execute the instructions to perform a method including:receiving, from the first device over the network, a first data request;generating, and storing at the second device, a first request identifierassociated with the first data request; transmitting, to the firstdevice over the network, a response to the first data request and thefirst request identifier associated with the first data request;receiving, from the first device over the network, a partial second datarequest, the partial second data request including (i) the first requestidentifier associated with the first data request, and (ii) adifferential between the first data request and the second data request;and constructing, at the second device, a full second data request,based on a comparison between the first data request, fetched using thefirst request identifier, and the received differential between thefirst data request and the second data request.

According to certain embodiments, the processor is further configuredfor: generating, at the second device, a response to the full seconddata request; and transmitting, to the first device over the network, adifferential between the response to the first data request and theresponse to the full second data request; or generating, at the seconddevice, a response to the full second data request; and transmitting, tothe first device over the network, an identifier associated with thefull second data request, and a differential between the response to thefirst data request and the response to the full second data request.

According to certain embodiments, the first device constructs a fullsecond response, based on a comparison between the first data response,fetched using the first request identifier, and the receiveddifferential between the first data response and the full second dataresponse; or the first device constructs a full second response, basedon a comparison between the first data response, fetched using the firstrequest identifier, and the received differential between the first dataresponse and the full second data response.

According to certain embodiments, the response to the first data requestand the first request identifier associated with the first data requestare stored at the first device; the first request identifier associatedwith the first data request is stored within a cache of the seconddevice; constructing, at the second device, the full second datarequest, is performed by merging the received differential between thefirst data request and the second data request into the first datarequest; or constructing, at the second device, the full second datarequest, is performed by swapping a payload element in the first datarequest with a payload element in the received differential between thefirst data request and the second data request.

According to certain embodiments, a computer readable medium is disclosethat stores instructions that, when executed by a computer, cause thecomputer to perform a method of reducing bandwidth during thetransmission of data between first and second devices over a network,the method including: receiving, from the first device over the network,a first data request; generating, and storing at the second device, afirst request identifier associated with the first data request;transmitting, to the first device over the network, a response to thefirst data request and the first request identifier associated with thefirst data request; receiving, from the first device over the network, apartial second data request, the partial second data request including(i) the first request identifier associated with the first data request,and (ii) a differential between the first data request and the seconddata request; and constructing, at the second device, a full second datarequest, based on a comparison between the first data request, fetchedusing the first request identifier, and the received differentialbetween the first data request and the second data request.

Additional objects and advantages of the disclosed embodiments will beset forth in part in the description that follows, and in part will beapparent from the description, or may be learned by practice of thedisclosed embodiments. The objects and advantages of the disclosedembodiments will be realized and attained by means of the elements andcombinations particularly pointed out in the appended claims.

It is to be understood that both the foregoing general description andthe following detailed description are exemplary and explanatory onlyand are not restrictive of the disclosed embodiments, as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute apart of this specification, illustrate various exemplary embodiments andtogether with the description, serve to explain the principles of thedisclosed embodiments.

FIG. 1 is a schematic diagram of an environment in which devices maytransmit data between each other over an electronic network, accordingto an exemplary embodiment of the present disclosure;

FIG. 2 is a flow diagram of a prior art method by which devices maytransmit data between each other over an electronic network;

FIG. 3 is a flow diagram of an exemplary method by which devices maytransmit data requests and data between each other over an electronicnetwork, according to an exemplary embodiment of the present disclosure;

FIG. 4A is a flow diagram of a first exemplary method by which devicesmay transmit data responses to each other over an electronic network,according to an exemplary embodiment of the present disclosure;

FIG. 4B is a flow diagram of a second exemplary method by which devicesmay transmit data responses to each other over an electronic network,according to an exemplary embodiment of the present disclosure;

FIG. 4C is a flow diagram of a third exemplary method by which devicesmay transmit data responses to each other over an electronic network,according to an exemplary embodiment of the present disclosure; and

FIG. 5 is a simplified functional block diagram of a computer that maybe configured as a device or server for executing the methods of FIGS.2-4C, according to exemplary embodiments of the present disclosure.

DESCRIPTION OF THE EMBODIMENTS

Reference will now be made in detail to the exemplary embodiments of thedisclosure, examples of which are illustrated in the accompanyingdrawings. Wherever possible, the same reference numbers will be usedthroughout the drawings to refer to the same or like parts.

The present disclosure describes systems and methods for datatransmission between network connected devices, and for reducingbandwidth used during the transmission of data, such as according toHTTP, between devices over the Internet. Specifically, when using astandard HTTP protocol to transmit data across a network, especially ina bandwidth controlled network, the need for generating and transmittingmultiple, similar, fully-constructed, requests may be burdensome on thenetwork and/or cause slow performance in an HTTP device. Accordingly,the presently disclosed systems and methods include techniques fortransmitting HTTP requests including the data that is different from aprevious request, instead of transmitting an entire, fully-constructedrequest including the data that is different from the previous request.

In its most fundamental form, if a first HTTP request includes thefollowing request string: “send_me_datatype_123_of_element_i=A” and thefirst request is stored as “R1,” a subsequent request for element “B,”instead of element “A,” may be constructed as “R1_i=B” instead of thelonger and larger, fully-constructed request,“send_me_datatype_123_of_element_i=B”. Systems and methods according tothe presently disclosed techniques may be especially useful when aclient is querying a Simple Object Access Protocol (“SOAP”), ExtensibleMarkup Language (“XML”), or Representational State Transfer (“REST”)service where the request has the same structure, and only small inputsare changed. By maintaining a copy of the initial request at the server,and returning to the client a unique identifier of such request, theclient may be able to send back only the unique identifier and theneeded difference to reconstruct a new request with much lesser payload.

FIG. 1 is a schematic diagram of an environment in which bandwidth usagemay be reduced during the transmission of HTTP requests and responsesbetween devices over the Internet, according to an exemplary embodimentof the present disclosure. Specifically, FIG. 1 illustrates an exemplaryenvironment including one or more first user devices 105, one or moresecond user devices 110, and/or one or more server systems 120. Thepresent disclosure is applicable to data transfer between anycombination of first user devices 105, second user devices 110, andserver systems 120. For example, the present disclosure is applicable todata transfer: (i) between one of first devices 105 and one of seconddevices 120; (ii) between one of first devices 105 and one or moreserver systems 120; and (iii) between one of second devices 110 and oneor more server systems 120.

As depicted in FIG. 1, first user devices 105 may include, for example,a mobile device or tablet 102, a laptop 104, and/or a computer or server106. Likewise, the second user devices 110 may include, for example, amobile device or tablet 102, a laptop 104, and/or computer or server106.

In one embodiment, user devices 105, 110 may be owned and used by one ormore people, who may be viewers of web pages and/or consumers of contentover the Internet, either through an application, mobile browser, or webbrowser stored on respective user devices. User devices 105, 110 mayinclude any type of electronic device configured to send and receivedata, such as websites, multimedia content, and electronicadvertisements, over electronic network 101. For example, each of userdevices 105, 110 may include a mobile device, smartphone, and/orpersonal digital assistant (“PDA”) disposed in communication withelectronic network 101. In addition, each of user devices 105, 110 maybe a tablet computer or any other kind of touchscreen-enabled device,personal computer, laptop, and/or server disposed in communication withelectronic network 101. Each of user devices 105, 110 may have a webbrowser and/or mobile browser installed for receiving and displayingelectronic content received from one or more web servers. Each of userdevices 105, 110 may have an operating system configured to execute aweb or mobile browser, and any type of application, such as a mobileapplication. In one embodiment, user devices 105, 110 may be configuredto download applications and/or application content from applicationservers. In one embodiment, user devices 105, 110 may be configured todownload one or more mobile applications from a mobile applicationserver, and execute those one or more applications to receive andmanipulate electronic content received from one or more of web serversand/or content distribution servers.

The one or more server systems 120 may include any type of web server,service, or any other type of web resource that may be accessed by oneor more of the first or second devices 105, 110. In one embodiment, theserver systems 120 may include, for purposes of illustration, one ormore Simple Object Access Protocol (“SOAP”) servers 112, one or moreExtensible Markup Language (“XML”) servers 114, and/or one or more(“Representational State Transfer”) REST servers 116. In one embodiment,one or more of servers 120 may be associated with an entity that makesand distributes mobile applications, or Web-based services.

Any or all of the devices and/or servers 105, 110, 120 may be disposedin communication with an electronic network 101, such as the Internet.Moreover, any pair of the devices and/or servers 105, 110, 120 may beconfigured to exchange data packets over the electronic network 101according to any suitable predetermined protocol, such as hypertexttransfer protocol (“HTTP”). Any or all of the devices and/or servers105, 110, 120 may be configured to perform various techniques forexchanging requests for data, responses to requests for data, and data,in manners to reduce the bandwidth used in such exchanges.

FIG. 2 depicts an exemplary prior art method by which devices and/orservers 105, 110, 120 would traditionally exchange requests for data,responses to requests for data, and data. Specifically, FIG. 2 depicts aprior art method 200 by which a first device 202 (i.e., “node A”) wouldissue a first request for data (“getdatarequest1”) 206 to a seconddevice 204 (i.e., “node B”). The second device 204 would parse therequest and prepare a complete first response to the first request fordata. The second device would then send the complete first response 208(“getdataresponse1”) back to the first device 202 in response to thefirst request 206. If the first device 202 was instructed, either by auser or operating code, to issue a second, similar request, the firstdevice 202 would generate a complete second request for data(“getdatarequest2”) 210 to the second device 204. Again, the seconddevice 204 would parse the request and prepare a complete secondresponse to the second request for data. The second device would thensend the complete second response 212 (“getdataresponse2”) back to thefirst device 202 in response to the second request 206.

Thus, even when a pair of devices (e.g., nodes A and B, or any first andsecond devices) are exchanging very similar structured requests andresponses that differ only in certain values or inputs, those devicessend entire, fully constructed requests and responses, as described withrespect to FIG. 2. Such methods involve significant bandwidth, or at theleast, they do not efficiently conserve bandwidth. This inefficiency isespecially burdensome, both in terms of time and revenue, in lowbandwidth networks, such as mobile networks, or in bandwidth-limited orpay-per-data networks.

Accordingly, as described above, the presently disclosed systems andmethods are directed to solving the above disclosed disadvantages, suchas by executing the exemplary methods of FIGS. 3 and 4A-4C.

FIG. 3 depicts an exemplary method 300 for exchanging data, such asrequests and responses for data, between a first device 302 and seconddevice 304 (e.g., “system A” and “system B”). It should be appreciatedthat each of system A and system B may be one of devices 105, 110 orservers 120. In addition, while systems A and B are each described ashaving a cache (i.e., persistent data storage) and a node (i.e.,combination of processor and RAM/ROM), each having different functionsof sending and receiving data, the depicted arrangement is onlyexemplary. The functions of cache A and node A may be combined into acommon device(s) or system(s), or cache A and node A may be remote fromeach other. Likewise, the functions of cache B and node B may becombined into a common device(s) or system(s), or cache B and node B maybe remote from each other.

In one embodiment, method 300 may include the first system 302 (A)issuing a first data request (step 310) (“GetDataRequest1”) to thesecond system 304 (B). First data request 310 may be any type of requestthat is structured according to some predetermined protocol, such asHTTP. Upon receiving the first data request 310, the second system 304may store the request (step 312), such as by storing the request incache B (“StoreRequest1”). In one embodiment, cache B may return a firstrequest ID (step 314) to node B (“ReturnRequestID1”), or alternativelynode B may generate the first request ID (step 314). The second system304 may then prepare a response (step 316) (“PrepareResponseData1”) tothe first data request 310, and send the data response and the firstrequest ID (step 318) back to the first system 302(“GetDataResponse1+RequestID1”).

Upon receiving the first data response (step 318), the first system 302may store the request and request ID (step 320), such as by storing therequest and request ID in cache A (step 320)(“StoreResponse1+RequestID1”). Accordingly, the first system 302 mayhave received a response to its first request, as well as an IDassociated with the first request and/or the first response. Asdescribed above, at any given time in the future, the first system 302may be instructed, either by a user or operating code, to issue a secondrequest to the second system 304. In some cases, the second request mayhave a format or structure that is similar to or equivalent to theformat or structure of the first request. For example, the first system302 may be a client that is querying a SOAP/XML/REST service operatingon the second system 304, where the second request has the samestructure as the first request, and only small inputs or values arechanged.

Accordingly, as shown in FIG. 3, at any time after receiving and storingthe first response 318, 320, the first system 302 may prepare to send asecond request to the second system 304 (step 322). Instead of preparingand sending a fully constructed second request, the first system 302 mayprepare and send to the second system 304 a request differential betweenthe first and second requests, along with the first request ID (step322) (“GetDataRequestDiff2+RequestID1”). In other words, the firstsystem 302 may send the second system 304 the ID for looking up thefirst request, and instructions or inputs for generating the secondrequest based on one or more differences between the first and secondrequests. In some cases, the request differential with the first requestID may be considered a “partial second data request.” Upon receiving therequest differential between the first and second requests, along withthe first request ID 322, the second system 304 may use the firstrequest ID to fetch the first request (step 324), e.g., from cache B(“FetchRequest1”). The second system 304 may receive a returned firstrequest (step 326) (“ReturnRequest1”), e.g., from cache B. The secondsystem 304 may then construct a full second request (step 328)(“ConstructFullRequest2”). For example, the second system 304 mayconstruct a full second request (step 328) based on both the firstrequest (as identified by the first request ID) and second requestdifferential received from the first system 302. In one embodiment, thesecond data request may be constructed by merging the receiveddifferential between the first data request and the second data requestinto the first data request. In one embodiment, the second data requestmay be constructed by swapping a payload element in the first datarequest with a payload element in the received differential between thefirst data request and the second data request. The second system 302may then prepare response data (step 330) (“PrepareResponseData2”).

The manner in which the second system 304 may prepare and transmit theresponse data (step 330) to the first system 302 may depend on a numberof factors, such as any desire to track multiple requests and requestIDs, and a desired extent of bandwidth conservation. Specifically, amongother embodiments, the second system 304 may, in response to receivingthe first request ID and the request differential between the first andsecond requests, send back to the first system 302 either (i) a responsedifferential between the first and second responses; (ii) the responsedifferential between the first and second responses, along with a secondresponse ID; or (iii) a fully constructed second response, as will bedescribed in more detail with respect to FIGS. 4A-4C.

FIG. 4A is a flow diagram of a first exemplary method by which devicesmay transmit data responses to each other over an electronic network,according to an exemplary embodiment of the present disclosure.Specifically, FIG. 4A depicts a method by which the second system 304may, in response to receiving the first request ID and the requestdifferential between the first and second requests, send back to thefirst system 302 a response differential (step 402) between the firstand second responses (“GetDataResponseDifferential2”). The first system302 may then fetch the first response (step 404) (“FetchResponse1”),such as from cache A, and return the first response (step 406)(“ReturnResponse1”), such as to node A. The first system 302 may thenconstruct a full second response (step 408) (“ConstructFullResponse2”).Accordingly, the first system 302 may obtain a full second response evenwhen the first system 302 only received from the second system 304 aresponse differential (i.e., the relatively smaller difference betweenthe first and second responses). As a result, the first system 302 mayobtain responses to its second and subsequent questions usingsignificantly less bandwidth than if the second and subsequent responseswere fully constructed by the second system 304 before transmission overa network.

FIG. 4B is a flow diagram of a second exemplary method by which devicesmay transmit data responses to each other over an electronic network,according to an exemplary embodiment of the present disclosure.Specifically, FIG. 4B depicts a method by which the second system 304may, in response to receiving the first request ID and the requestdifferential between the first and second requests, send back to thefirst system 302 the response differential between the first and secondresponses, along with a second response ID (step 416)(“GetDataResponseDifferential2+RequestID2”). In one embodiment, thesecond system 304 may have previously invalidated the first request,such as within cache B (step 412), and returned a second response ID(step 414) (“ReturnResponseID2”), such as to node B, for sending alongwith the second data response differential (step 416). Upon receivingthe response differential between the first and second responses, alongwith a second response ID, the first system 302 may then store thesecond response ID and fetch the first response (step 418)(“StoreRequestID2+FetchResponse1”), such as from cache A, and return thefirst response (step 420) (“ReturnResponse1”), such as to node A. Thefirst system 302 may then construct a full second response (step 422)(“ConstructFullResponse2”). Accordingly, the first system 302 may obtaina full second response even when the first system 302 only received fromthe second system 304 a response differential (i.e., the relativelysmaller difference between the first and second responses) and a secondrequest ID (for use in future requests). As a result, the first system302 may obtain responses to its second and subsequent requests usingsignificantly less bandwidth than if the second and subsequent responseswere fully constructed by the second system 304 before transmission overa network.

FIG. 4C is a flow diagram of a third exemplary method by which devicesmay transmit data responses to each other over an electronic network,according to an exemplary embodiment of the present disclosure. In somecases, it may be desirable to send a fully constructed response fromsecond system 304 to first system 302. For example, if cache B isunavailable or unresponsive, or if the first system is unable toretrieve a first response ID, then the second system 304 may berequested to construct a full second response (step 424), and second thefully constructed second response to the first system (step 426).

EXAMPLE

In one embodiment, the first data request 310 may be a request for astock price, such as the following exemplary structure request:

POST /InStock HTTP/1.1 Host: www.example.org Content-Type:application/soap+xml; charset=utf-8 Content-Length: nnn X-Diff: 1 <?xmlversion=″1.0″?> <soap:Envelopexmlns:soap=″http://www.w3.org/2001/12/soap-envelope″soap:encodingStyle=″http://www.w3.org/2001/12/soap-encoding″> <soap:Bodyxmlns:m=″http://www.example.org/stock″> <m:GetStockPrice><m:StockName>IBM</m:StockName> </m:GetStockPrice> </soap:Body></soap:Envelope>

In this example, the first device is requesting a stock price for thecompany, “IBM.” The string, “X-Diff: 1” informs the recipient that thefirst device intends to invoke the bandwidth conserving techniques ofthe present disclosure. In one embodiment, the second system's storingof the first request (312), returning a request ID for the first request(314), preparing a response to the first request (316), and sending theresponse to the first system (318) may be executed according to thefollowing exemplary code:

HTTP/1.1 200 OK Content-Type: application/soap+xml; charset=utf-8Content-Length: nnn X-Diff: 1 X-Diff-Id: abc <?xml version=″1.0″?><soap:Envelope xmlns:soap=″http://www.w3.org/2001/12/soap-envelope″soap:encodingStyle=″http://www.w3.org/2001/12/soap-encoding″> <soap:Bodyxmlns:m=″http://www.example.org/stock″> <m:GetStockPriceResponse><m:Price>34.5</m:Price> </m:GetStockPriceResponse> </soap:Body></soap:Envelope>

In this example, the second device confirms that it is executing thebandwidth conserving techniques of the present disclosure (“X-Diff: 1”)and assigns the request an ID (“X-Diff-Id: abc”). The second device alsoincludes in the full structure response the specific response to thefirst device's request, namely, in this example, the stock price for IBM(“<m:Price>34.5</m:Price>”).

In one embodiment, any second or subsequent data request of a similar orequivalent structure may invoke the bandwidth conserving techniques ofthe present disclosure by generating and sending a request differential,as opposed to a fully constructed response. For example, the second datarequest 322 may be a request for the stock price of another company,such as GM, as illustrated by the following exemplary code:

POST /InStock HTTP/1.1 Host: www.example.org Content-Type:application/soap+xml; charset=utf-8 Content-Length: nnn X-Diff-Id: abcX-Diff: 1 13x8 L3 V GM*

In this example, the string passes the agreed upon request ID:“X-Diff-Id: abc,” and the term “13×8 L3 V GM*” may be defined where A×Bis coordinate of the change; L is the length of the input to change, ifspecified; and V is the target value.

In one embodiment, the second data response 416 (FIG. 4B) may be sentconsistent with the exemplary code:

HTTP/1.1 200 OK Content-Type: application/soap+xml; charset=utf-8Content-Length: nnn X-Diff: 1 X-Diff-Id: efg 12x13 V 20.0*

In this example, the differential response invokes the bandwidthconserving techniques of the present disclosure (“X-Diff: 1”), andincludes the assigned second request ID (“X-Diff-Id: efg”) and therequested stock price of GM (in this case, “20.0”).

In one embodiment, the second data response 426 (FIG. 4C) may include anentire structured response, consistent with the exemplary code:

HTTP/1.1 200 OK Content-Type: application/soap+xml; charset=utf-8Content-Length: nnn X-Diff: 0 X-Diff-Id: efg <?xml version=″1.0″?><soap:Envelope xmlns:soap=″http://www.w3.org/2001/12/soap-envelope″soap:encodingStyle=″http://www.w3.org/2001/12/soap-encoding″> <soap:Bodyxmlns:m=″http://www.example.org/stock″> <m:GetStockPriceResponse><m:Price>20.0</m:Price> </m:GetStockPriceResponse> </soap:Body></soap:Envelope>

In this example, the second device indicates that it is not invoking thebandwidth conserving techniques of the present disclosure (“X-Diff: 0”),includes the assigned second request ID (“X-Diff-Id: efg”), and therequested stock price of GM (in this case, “20.0”). However, the fullyconstructed second response contains more data than the differentialresponses generated according to FIGS. 4A and 4B.

Any of user devices 105, 110, and/or servers 120 may include any type orcombination of computing systems, such as handheld devices, personalcomputers, servers, clustered computing machines, and/or cloud computingsystems. In one embodiment, user devices 105, 110, and/or servers 120may be an assembly of hardware, including a memory, a central processingunit (“CPU”), and/or optionally a user interface. The memory may includeany type of RAM or ROM embodied in a physical storage medium, such asmagnetic storage including floppy disk, hard disk, or magnetic tape;semiconductor storage such as solid state disk (SSD) or flash memory;optical disc storage; or magneto-optical disc storage. The CPU mayinclude one or more processors for processing data according toinstructions stored in the memory. The functions of the processor may beprovided by a single dedicated processor or by a plurality ofprocessors. Moreover, the processor may include, without limitation,digital signal processor (DSP) hardware, or any other hardware capableof executing software. The user interface may include any type orcombination of input/output devices, such as a display monitor,touchpad, touchscreen, microphone, camera, keyboard, and/or mouse.

FIG. 5 is a simplified functional block diagram of a computer that maybe configured as a device or server for executing the methods of FIGS.2-4C, according to exemplary embodiments of the present disclosure.

Specifically, in one embodiment, as shown in FIG. 5, any of devices 105,devices 110, and/or servers 120 may be an assembly of hardware 500including, for example, a data communication interface 560 for packetdata communication. The platform may also include a central processingunit (CPU) 520, in the form of one or more processors, for executingprogram instructions. The platform typically includes an internalcommunication bus 510, program storage, and data storage for variousdata files to be processed and/or communicated by the platform such asROM 530 and RAM 540, although the system 500 often receives programmingand data via network communications 570. The server 500 also may includeinput and output ports 550 to connect with input and output devices suchas keyboards, mice, touchscreens, monitors, displays, etc. Of course,the various server functions may be implemented in a distributed fashionon a number of similar platforms, to distribute the processing load.Alternatively, the servers may be implemented by appropriate programmingof one computer hardware platform.

Program aspects of the technology may be thought of as “products” or“articles of manufacture” typically in the form of executable codeand/or associated data that is carried on or embodied in a type ofmachine readable medium. “Storage” type media include any or all of thetangible memory of the computers, processors or the like, or associatedmodules thereof, such as various semiconductor memories, tape drives,disk drives and the like, which may provide non-transitory storage atany time for the software programming. All or portions of the softwaremay at times be communicated through the Internet or various othertelecommunication networks. Such communications, for example, may enableloading of the software from one computer or processor into another, forexample, from a management server or host computer of the mobilecommunication network into the computer platform of a server and/or froma server to the mobile device. Thus, another type of media that may bearthe software elements includes optical, electrical and electromagneticwaves, such as used across physical interfaces between local devices,through wired and optical landline networks and over various air-links.The physical elements that carry such waves, such as wired or wirelesslinks, optical links or the like, also may be considered as mediabearing the software. As used herein, unless restricted tonon-transitory, tangible “storage” media, terms such as computer ormachine “readable medium” refer to any medium that participates inproviding instructions to a processor for execution.

While the presently disclosed sharing application, methods, devices, andsystems are described with exemplary reference to mobile applicationsand to transmitting HTTP data, it should be appreciated that thepresently disclosed embodiments may be applicable to any environment,such as a desktop or laptop computer, an automobile entertainmentsystem, a home entertainment system, etc. Also, the presently disclosedembodiments may be applicable to any type of Internet protocol that isequivalent or successor to HTTP.

Other embodiments of the disclosure will be apparent to those skilled inthe art from consideration of the specification and practice of theinvention disclosed herein. It is intended that the specification andexamples be considered as exemplary only, with a true scope and spiritof the invention being indicated by the following claims.

What is claimed is:
 1. A method for reducing bandwidth during thetransmission of data between first and second devices over a network,the method including: receiving, from the first device over the network,a first data request; receiving, from the first device over the network,a partial second data request, the partial second data request includinga differential between the first data request and the second datarequest; and constructing, at the second device, a full second datarequest, based on a comparison between the first data request and thereceived differential between the first data request and the second datarequest by swapping a payload element in the first data request with apayload element in the received differential between the first datarequest and the second data request.
 2. The method of claim 1, furthercomprising: generating, at the second device, a response to the fullsecond data request; and transmitting, to the first device over thenetwork, a differential between the response to the first data requestand the response to the full second data request.
 3. The method of claim2, wherein the first device constructs a full second response, based ona comparison between the first data response and the receiveddifferential between the first data response and the full second dataresponse.
 4. The method of claim 1, further comprising: generating, atthe second device, a response to the full second data request; andtransmitting, to the first device over the network, a differentialbetween the response to the first data request and the response to thefull second data request.
 5. The method of claim 4, wherein the firstdevice constructs a full second response, based on a comparison betweenthe first data response and the received differential between the firstdata response and the full second data response.
 6. The method of claim1, wherein the response to the first data request is stored at the firstdevice.
 7. The method of claim 1, wherein, constructing, at the seconddevice, the full second data request, is performed by merging thereceived differential between the first data request and the second datarequest into the first data request.
 8. The method of claim 1, whereinthe first device is a personal computer, tablet computer, or smartphoneand the second device is a server executing a Web-based Simple ObjectAccess Protocol (“SOAP”) service, Extensible Markup Language (“XML”)service, or Representational State Transfer (“REST”) service.
 9. Asystem for reducing bandwidth during the transmission of data betweenfirst and second devices over a network, the system including: a datastorage device storing instructions for reducing bandwidth during thetransmission of data between first and second devices over a network; aprocessor configured to execute the instructions to perform a methodincluding: receiving, from the first device over the network, a firstdata request; receiving, from the first device over the network, apartial second data request, the partial second data request including adifferential between the first data request and the second data request;and constructing, at the second device, a full second data request,based on a comparison between the first data request and the receiveddifferential between the first data request and the second data requestby swapping a payload element in the first data request with a payloadelement in the received differential between the first data request andthe second data request.
 10. The system of claim 9, wherein theprocessor is further configured for: generating, at the second device, aresponse to the full second data request; and transmitting, to the firstdevice over the network, a differential between the response to thefirst data request and the response to the full second data request. 11.The system of claim 10, wherein the first device constructs a fullsecond response, based on a comparison between the first data responseand the received differential between the first data response and thefull second data response.
 12. The system of claim 9, wherein theprocessor is further configured for: generating, at the second device, aresponse to the full second data request; and transmitting, to the firstdevice over the network, a differential between the response to thefirst data request and the response to the full second data request. 13.The system of claim 12, wherein the first device constructs a fullsecond response, based on a comparison between the first data responseand the received differential between the first data response and thefull second data response.
 14. The system of claim 9, wherein theresponse to the first data request is stored at the first device. 15.The system of claim 9, wherein, constructing, at the second device, thefull second data request, is performed by merging the receiveddifferential between the first data request and the second data requestinto the first data request.
 16. A non-transitory computer readablemedium storing instructions that, when executed by a computer, cause thecomputer to perform a method of reducing bandwidth during thetransmission of data between first and second devices over a network,the method including: receiving, from the first device over the network,a first data request; receiving, from the first device over the network,a partial second data request, the partial second data request includinga differential between the first data request and the second datarequest; and constructing, at the second device, a full second datarequest, based on a comparison between the first data request and thereceived differential between the first data request and the second datarequest by swapping a payload element in the first data request with apayload element in the received differential between the first datarequest and the second data request.